Improved manner of strapping blocks



UNITED STATES PATENT OEEIGE.

ALBERT Gr. WOLF, OF MYSTIC RIVER, CONNECTICUT.

IMPROVED MANNER `OF STRAPPING BLOCKS.

Specication forming part of Letters Patent No. 59,496, dated November 6,1866.

To all whom it may concern:

Be it known that I, ALBERT G. WOLF, of Mystic River, in the county ofNew London and State of Connecticut, have invented a new and usefulImprovement in Strapping Blocks; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming part of thisspecication, in which- Figure l is an edge View of a double-sheave blockstrapped according to my invention. Fig. 2 is a face or side view of asingle-sheave block strapped according to my invention. Fig. 3 is avertical transverse section of the same. Fig. 4 is an edge view oftheblock shown in Fig 2. Fig. 5 is ahorizontal section ofthe same.

Similar letters of reference in the several figures indicatecorresponding parts.

The nature of my invention consists in passing round wire around singleor many sheave blocks in such manner that it serves to bind andstrengthen the block, and at the same time clears the sheave-pin on bothfaces or sides of the block. This mode of strapping tackleblocksobviates the labor and expense of Eattening the wire. It also avoids theweakening of the metal by punching it to admit the ends of thesheave-pin through it. Sharp corners in tting are also avoided.

The use of round iron in the manner I shall hereinafter describe givesmore strength with less weight of niet-al. Less skill to strap a blockis required, for any good blacksmith who can make a chain-link can strapa marine or tackle block on my plan.

To enable others skilled in the art to lmake and use my invention7 Iwill proceed to desc ribe the same with references to the drawings.

A, Fig. 1, represents a link of round iron placed diagonally to thesheave-pin, around a double-sheave block. To tit this link of round ironto the block, a shallow groove, a, is cut in the faces and on the topot' the block, as illustrated in Figs. 2 and 5. The top part of thegroove runs diagonal to the sheave-pin,and is 'iutersected by, or rathercontinued by, the vertical portions of the groove in such amanner th atthe groove runs down to the left of the pin on one face of the block andto the right of the pin on the other face thereof, as shown in Fig. 2,but more plainly in Fig. 5.

The suspending hooks and links which are usually furnished with tackleor marine blocks may be attached in the manner shown in the drawings, orin any other approved manner.

It is believed that iron, whether I iat, square, or round, if applieddiagonal to the pin, is a great improvement in the strapping of blocks,and therefore, while I much prefer to use round iron, I do not wish tobe understood as limiting my invention thereto.

I am aware that round iron has been driven into the body of a block in adiagonal manner; but it is obvious that iron thus applied will not bindthe iibers ot' the' block together understrain, but, on the contrary,will tend to split or pry the wood apart.

Vhat I claim as my invention,and desire to secure by Letters Patent, is-

An iron strap applied around a sheave-block so as to clear the ends ofthe sheave-pin, on opposite sides of the center of said pin,substantially as herein described.

ALBERT G. WOLF.

Witnesses F. W. FRENCH, ALBERT WILLIAMS.

